Journal-bearing for car and other axles.



J. E. MUHLPELD. JOURNAL BEARING FOR OAR AND OTHER AXLBS.

APPLICATION FILED APILQ, 1909.

Patellted FBO. 28, 1911.

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JOURNAL BEARING POR CAR AND OTHER AXLBS.

` APPLICATION FILED 111 R.9,19o9. 985,438. v Patented Feb.28,1911.

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TOI-IN E. MUHLFELD, 0F BALTIMORE, lVLAR-LANB.

JOURNAL-BEARING FOR CAB AND OTHER AXLES.

To all whom it may concern:

Be it known that l, JOHN E. MUHLFELD, a citizen of the United States, residing in the city of Baltimore and State of Maryland, have invented a new and usei'ul .lmprovement in Journal-Bearings for Car and Other Axles, of which the following is a specification. y

My invention relates to improvements in journal bearings for car and other axles, and more particularly to improvements upon the journal bearings of my Patents Nos. 860,154 of Sept. 17th, 1902', 904,634 of Nov. 24th, 1908 and 905,088 of Nov. 24, 1908, and of my pending application, Ser. ilo. 459,824, tiled october 28th, 190s.

rlhe object of my present improvement is to perfect the journal bearings of my said pending application and patents, and to simplify the same in details of construction, tending to reduce the cost of manufacture wit-hout interfering with the etliciency ot the journal bearing in operation.

My invention consists in the novel form and construction of the brass ormain bearing metal shell with its longitudinally and transversely extending' bearing ribs and central cavities and surrounding channels, and of the cooperating removable soft metal liner shell and its central and marginal side and end ribs or thickened portions and intervening channels or recesses as herein shown and described and more particularly speciiied in the claims.

In my present improvement, the longitudinal extending bearing ribs of the main shell are bent, deflected or inclined toward each other at their middle portions instead oi" extending straight or parallel, as in my said pending application and former patents, and the middle or intermediate transverse bearing rib is made materially wider to further strengthen or stiften the main shell against spreading', and the interengaging upright keying shoulders or lugs on the transversely extending end bearing ribs oi the main shell, and on the extreme end ribs of the sott metal or liner shell are made the reverse of the construction shown in my said pendingapplication. That is to say, the upright central recess is formed in the marginal end rib of the soft metal or liner shell instead of in the transverse end bearing rib of the main shell, as in the construction shown in my said pending ap plication, the end bearing rib of the main Specification of Letters Patent.

Application led April 9, 1909.

Patented Feb. 28, 1911. erial No. 488,788.

shell having a corresponding central upright lug or projection.

ln the accompanying' drawing forming a part ot' this specification, Figure 1 is a central, vertical longitudinal section of a journal bearing embodying my invention. Fig. 2 is a detail plan view of the separate piece removable sott metal liner shell. Fig. 3 is a detail bottom plan view of the main bearing metal shell. Figs. 4f, 5, G and 7 are vertical cross sections on lines 4 42, 5 5, 6 6 and 7-7 of Fig. 1. Fig. 8 is a longitudinal vvertical section on line 8-8 of F ig. 7. Fig. 9 is a top or plan view ot the bearing and fig. 10 is a bottom plan view of the removable liner shell.

In the drawing', A represents the journal of a car or other axle having the customary collar a and shoulder al.

My improved journal bearing comprises a main shell B of a hard, strong bearing metal, such, for example, as brass, and a separate piece removable sott bearing metal or liner shell l), of any suitable bearing metal, such, for example, as a composition of lead and antimony, Babbitt or the like.

The main shell B has the customary upper key contact face b, side walls b1 and side lugs 62. The main shell B is provided on its under tace with end bearing ribs 3 and inwardly bent or inclined longitudinally extending bearing rib 7)* and an intermediate or middle transversely extending and connecting broad bearing rib b5, the ends 7) of which intermediate ribproject slightly beyond the outer edges of said longitudinally extending' bearing ribs 7f3.' the transversely extending end bearings ribs 3 intersecting and connecting at the corners with the inclined or bent and longitudinally extending bearing ribs bt and the broad intermediate bearing rib o5 intersecting and connecting with the longitudinal bearing ribs c* at the middle portions thereof where their inward bends cause them to approach each other, and all said bearing ribs having concave bearing faces for contacting with the journal when the liner shell D becomes worn away, or when it melts and flows out from a hot box. The main shell B is also provided with side channels o7 and intermediate central depressions or cavities S, said central depressions or cavities bs being of a substantially triangular form. The concave bearing faces of of the bearing ribs c3 Z1* b5 are concentric or struck on the same circle, and suitably dressed or turned. The main shell B also has at its extreme ends transversely extending end channels Z210 which are made as deep as the central depressions or cavities Z2S. The transversely extending end bearing ribs Z23 at each end of the main bearing shell are preferably furnished with extensions 611 connectingl with the side walls b1 of the main shell, and at its middle portion transversely extending thickened portions or shallow ribs 612 extend from the side walls of the main shell to `the extensions of of the intermediate bearing rib Z25 to strengthen and brace the main shell against spreading. The transversely extending end bearing ribs Z23 of the main shell are also provided in their outer upright end faces with an upright central lug or projection Z214 and upright shoulders 515, which upright lug or projection 1* fits in the corresponding recess in the transversely extending end rib of the soft metal or liner shell D, and which shoulders Z215 interiit with and engage corresponding shoulders on said end rib of the soft metal liner shell to prevent the soft metal of said end rib of the liner shell from flowing or crawling or squeezing out under the end thrust and frictional rolling action of the journal collar or shoulder against the extreme end ribs of said soft metal liner shell. The side walls of the main shell B on the outside thereof are furnished with tapering enlargements or reinforcements o16 Z221 522 at the end portions thereof to further stitfen and strengthen the main shell and further adapt it to overcome any tendency to spread at the ends.

The soft metal liner shell D has a concave bearing face CZ conforming or adapted to conform to the curvature of the journal and it is provided on its upper face with marginal side ribs (Z1, end ribs (Z2 and central 'lugs or thickened portions (Z3, said central lugs or thickened portions being preferably of substantially triangular form. The marginal side ribs (Z1 of the liner shell D have inwardly bent or inclined inner faces Z4 to fit the corresponding inward bend or inclination of the longitudinally extending bearing ribs Z2* of the main shell. rlhe marginal side ribs Z1 of the softmetal or liner shell D each have at their middle portion a notch or depression Z5 to receive and accommodate the corresponding transversely extending middle, shallow, stiifening rib Z212 of t-he main shell, and with a further notch or depression Z7 to receive and accommodate the projecting extension Z26 of the transversely extending intermediate broad bearing rib b5 of the main shell. The marginal end ribs (ZL of the liner shell D are furnished at the crown portions thereof with keying or holding recesses ZS to receive the corresponding upright keying lugs or projections Z214 on the end faces of the end bearing ribs Zr of the main shell B. rjhe central lugs or thickened portions (Z3 of the liner shell D are also furnished with downwardly flaring openings (Z9 to receive a hard or solid lubricant C, said downwardly flaring openings (Z9 being preferably substantially triangular in shape, corresponding to the substantially triangular form of the central lugs or thickened portions Z3 of the liner shell D. The abutment faces ('10 of the marginal side ribs (Z1, end ribs (Z2 and central lugs (Z3 of the liner shell D, which interfit with and engage the corresponding abutment faces Z217 of the bearing ribs Z23 Z2* Z25 of the main shell, are all substantially upright but slightly flaring or tapering so that the liner shell D may be freely removed from and replaced in the main shell B, while at the same time presentingnumerous interengaging abutment faces of the two shells of a gregate extensive area, and thus to securely anchor the removable liner shell in the main shell and prevent it from squeezing, flowing or crawling out either transversely under the rolling action of the journal or longitudinally under the end thrust of the journal collar and shoulder. The outer abutment faces CZ on the liner shell D which are embraced by the inner abutment faces 51S of the depending sides or walls Z21 of the main shell are also slightly tapering while substantially upright, so as to permit the. liner shell D to be readily removed from the main shell B, and at the same time serve to confine and hold in place the soft metal of the liner shell against the rolling action of the journal. The transversely extending end ribs Z2 of the liner shell D at the crown portion thereof are preferably furnished with upwardly projecting keying or holding lugs Z1L which tit in corresponding keying or holding recesses Z920 in the main shell B adjacent to the keying lugs Z12 thereof to further aid in preventing the end ribs (Z2 of the liner shell from displacement or crawling or squeezing out under the rolling and end thrust action of the journal collar and shoulder.

I claim l. A journal bearing comprising in coinbination a main shell of hard, strong bearing metal, and a separate piece removable liner shell of soft bearing metal, said main shell having narrow longitudinally extending bearing ribs and transversely extending end bearing ribs on its under face at its crown portion, and transversely extending channels at its extreme ends, and said main shell having side walls embracing and confining the liner shell at its outer edges, the longitudinally extending bearing ribs of said main shell being inclined toward each other from each end toward the middle, said liner shell having transversely extending marginal end ribs embracing t-he outer recessed ends of the main shell, marginal side ribs, and central lugs iitting between said bearing ribs of the main shell, said-transversely extending end bearing ribs of the main shell having each on its outer upright face an upright central keying lug, and said marginal end ribs of the liner shell having each a corresponding recess to receive said keying lug, and said marginal end ribs of the liner shell having each on its upper face an upwardly projecting keying lug7 and the main shell having at its channeled ends keying recesses to receive said upwardly projecting keying lugs on the end ribs of the liner shell, substantially as specified.

2. 'A journal bearing comprising in combination a main shell of hard, strong bearing metal, and a separate piece removable liner shell of soft bearing metal, said main shell having narrow longitudinally extending bearing ribs and transversely extending end bearing ribs on its under face at its crown portion and transversely extending channels at its extreme ends, and said main shell having side walls embracing and confining the liner shell at its outer edges, the longitudinally extending bearing ribs of said main shell being inclined toward each other from each end toward the middle, said liner shell having transversely extending marginal end ribs embracing the outer recessed ends of the main shell, marginal side ribs and central lugs fitting between said bearing ribs of the main shell, said marginal end ribs of the liner shell having upwardly projecting key` ing lugs, and the main shell having correo sponding recesses to receive said keying lugs, substantially as specified.

JOHN E. MUHLFELD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

